Postinor-2 is an emergency contraceptive pill containing Levonorgestrel as its active ingredient. It is designed to prevent pregnancy after unprotected sexual intercourse or contraceptive failure.
Key Features
- Active Ingredient: Each tablet contains 750 micrograms (0.75 mg) of Levonorgestrel.
- Pack Size: Typically available in packs of 2 tablets.
Indications
Postinor-2 is indicated for:
- Emergency Contraception: To prevent pregnancy when taken within 72 hours (3 days) after unprotected intercourse. It is not intended for regular use as a contraceptive method.
Dosage Instructions
- First Dose: Take one tablet as soon as possible after unprotected intercourse.
- Second Dose: Take the second tablet 12 hours after the first dose.
- If vomiting occurs within 2 hours of taking a tablet, consult a healthcare provider, as you may need to take an additional tablet.
Mechanism of Action
Postinor-2 works primarily by:
- Delaying or inhibiting ovulation (the release of an egg from the ovaries).
- Preventing fertilization of the egg by sperm.
- Altering the uterine lining to prevent implantation if ovulation has already occurred.
Efficacy
- The effectiveness of Postinor-2 decreases with time:
- Approximately 95% effective if taken within 24 hours.
- About 85% effective if taken within 72 hours.
- Not effective if taken more than 72 hours after unprotected intercourse.
Side Effects
Common side effects may include:
- Nausea or vomiting
- Fatigue
- Headache
- Dizziness
- Breast tenderness
- Changes in menstrual bleeding patterns
Precautions
- Postinor-2 does not protect against sexually transmitted infections (STIs).
- It should not be used as a regular contraceptive method.
- Consult a healthcare provider if you have any health conditions or are taking other medications that may interact with Levonorgestrel.
